Corrosion Crack Nucleation Mechanism in the Welded Structures of X65 Steel in Natural Seawater

Table 2

Welding parameters.

Weld bead	Grades and specifications of welding consumables (mm)	Polarity	Welding current (A)	Arc voltage (V)	Welding speed (cm/min)
Root welding	E6010, φ3.2	Negative	60∼90	25∼35	6∼13
Hot welding	E71T8-K6, φ2.0	Positive	180∼250	18∼19	15∼30
Filling			160∼240		12∼25
Facing			160∼240		12∼25